Chlorinated Wide-Bandgap Donor Polymer Enabling Annealing Free Nonfullerene Solar Cells with the Efficiency of 11.5%
Abstract
Substituting the hydrogen atoms on the conjugated side chain of a wide-bandgap polymer J52 with chlorine atoms can simultaneously increase the Jsc, Voc, and FF of nonfullerene OSCs, leading to an efficiency boost from 3.78 to 11.53%, which is among the highest efficiencies for as-cast OSCs reported to date. To illustrate the impressive 3-fold PCE enhancement, the chlorination effect on the optical properties and energy levels of polymers, film morphology, and underlying charge dynamics is systematically investigated. Grazing incidence wide-angle X-ray scattering studies show that chlorinated J52-2Cl exhibits strong molecule aggregation, the preferred face-on orientation, and enhanced intermolecular pi-pi interactions, hence increasing the charge carrier mobility by 1 order of magnitude. Moreover, chlorination modifies the miscibility between the donor and acceptor and consequently optimizes the phase separation morphology of J52-2Cl:ITIC blend films. Finallyhese results highlight chlorination as a promising approach to achieve highly efficient as-cast OSCs without any extra treatment.
- Authors:
-
[3];
[1];
[4];
- Wuhan Inst.of Technology, Wuhan (China). Inst. of Materials for Optoelectronics and New Energy, School of Materials Science and Engineering
- Huazhong Univ. of Science and Technology, Wuhan (China). Wuhan National Lab. for Optoelectronics
- Nanjing Univ. of Technology (China). School of Chemistry and Chemical Engineering
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. of Molecular Engineering
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- National Natural Science Foundation of China (NSFC); Wuhan Institute of Technology (WIT); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1491094
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physical Chemistry Letters
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 24; Journal ID: ISSN 1948-7185
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 25 ENERGY STORAGE; 36 MATERIALS SCIENCE; as-cast organic solar cells; chlorination; thermal annealing-free; wide bandgap donor materials
Citation Formats
Liu, Zhitian, Gao, Yerun, Dong, Jun, Yang, Minlang, Liu, Ming, Zhang, Yu, Wen, Jing, Ma, Haibo, Gao, Xiang, Chen, Wei, and Shao, Ming. Chlorinated Wide-Bandgap Donor Polymer Enabling Annealing Free Nonfullerene Solar Cells with the Efficiency of 11.5%. United States: N. p., 2018.
Web. doi:10.1021/acs.jpclett.8b03247.
Liu, Zhitian, Gao, Yerun, Dong, Jun, Yang, Minlang, Liu, Ming, Zhang, Yu, Wen, Jing, Ma, Haibo, Gao, Xiang, Chen, Wei, & Shao, Ming. Chlorinated Wide-Bandgap Donor Polymer Enabling Annealing Free Nonfullerene Solar Cells with the Efficiency of 11.5%. United States. https://doi.org/10.1021/acs.jpclett.8b03247
Liu, Zhitian, Gao, Yerun, Dong, Jun, Yang, Minlang, Liu, Ming, Zhang, Yu, Wen, Jing, Ma, Haibo, Gao, Xiang, Chen, Wei, and Shao, Ming. Wed .
"Chlorinated Wide-Bandgap Donor Polymer Enabling Annealing Free Nonfullerene Solar Cells with the Efficiency of 11.5%". United States. https://doi.org/10.1021/acs.jpclett.8b03247. https://www.osti.gov/servlets/purl/1491094.
@article{osti_1491094,
title = {Chlorinated Wide-Bandgap Donor Polymer Enabling Annealing Free Nonfullerene Solar Cells with the Efficiency of 11.5%},
author = {Liu, Zhitian and Gao, Yerun and Dong, Jun and Yang, Minlang and Liu, Ming and Zhang, Yu and Wen, Jing and Ma, Haibo and Gao, Xiang and Chen, Wei and Shao, Ming},
abstractNote = {Substituting the hydrogen atoms on the conjugated side chain of a wide-bandgap polymer J52 with chlorine atoms can simultaneously increase the Jsc, Voc, and FF of nonfullerene OSCs, leading to an efficiency boost from 3.78 to 11.53%, which is among the highest efficiencies for as-cast OSCs reported to date. To illustrate the impressive 3-fold PCE enhancement, the chlorination effect on the optical properties and energy levels of polymers, film morphology, and underlying charge dynamics is systematically investigated. Grazing incidence wide-angle X-ray scattering studies show that chlorinated J52-2Cl exhibits strong molecule aggregation, the preferred face-on orientation, and enhanced intermolecular pi-pi interactions, hence increasing the charge carrier mobility by 1 order of magnitude. Moreover, chlorination modifies the miscibility between the donor and acceptor and consequently optimizes the phase separation morphology of J52-2Cl:ITIC blend films. Finallyhese results highlight chlorination as a promising approach to achieve highly efficient as-cast OSCs without any extra treatment.},
doi = {10.1021/acs.jpclett.8b03247},
journal = {Journal of Physical Chemistry Letters},
number = 24,
volume = 9,
place = {United States},
year = {2018},
month = {11}
}
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